Electrical apparatus



F. w. WORLEY. ELECTRICAL APPARATUS, APPLICATION FlLED FEB. 20,1919. RENEWED MAR. 9' 1922.

1A3 11,55 Patented 001:. m, 1922.,

Ewueutoz. F WM Patented @ct. llll, i922.

FREDERICK W.- wotannY, or MOUNT VERNON, new roan.

ELECTRICAL APPARATUS.

Application filed FebruaryZO, 1918, Serial No. 218,231. Renewed March 9, 1922. Serial No.

To all to 720m it may concern:

Be it known that I, FREDERICK W.

.Wonnnr, a citizen of the United States, re-

siding at Mount Vernon, in the county of lVestchester and titate of New York, have invented certain. new and useful. lnuprovements in Electrical Apparatus, of which the following is a specification.

This invention has relation to electrical apparatus, and has for an object to provide a new and improved electrical signal push button.

An object. of the invention. is to provide a pushbutton of a character comprising but few parts of an inexpensive nature, permitting the devices to be economically manufactured.

'A still further object of the invention is to provide a form of push buttom constructed in a manner to permit the parts to bereadily disconnected for repairs, to permit the device to be installed, on for other In addition to the foregoing, this inven tion comprehends improvements in the details of construction and arrangement of parts, to be hereinafter described and particularly pointed out in the appended claim. The single figure of the drawing is a sectional view.

In the drawing '1: have shown a base plate 23 of circular configuration formed with a pair of upstruck perforated lugs 23 at diametrically opposite points. A casing 24 which is formed of sheet metal is provided for superpositioning upon the base plate and'is formed at opposite pomts wlth lugs 25 to enter the perforations of the lugs 23 to support a pair of contact plates 30 in end to .endarrangement but out of contact.

The pin 28 operates between the adjacent ends of the contact plates 30, and a disc ofinsulating material 31 is secured to the until. the contact plates 30 are bridged by contact with the nut 27, whereupon the cir cuit is completed. Bolts 33 serve conjunc tively to form binding posts and at thesame time secure the contact plates to block 29. i i

While I have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations may be made therein; and I therefore reserve the right and privilege of changing the form of the details or otherwise altering the arrangement of the correlated parts, without departing from the spirit of the invention or the scope of the appended claim.

Havingthus described my invention, what I claim as new and desire to secure by Letters Patent, is:

A device of the character described, a base plate having an opening therein and having apertured ears struck up at opposite sides of said opening, a casing provided with lugs to extend through the apertures of said ears and secure it on said plate, said casing being formed of sheet metal and including an inwardly extending collar, a push button mounted for inward and outward movement in said collar, a pair of contact plates mounted on and insulated from said base plate, said contact plates being spaced from one another, a pin extending through said opening of the base plate andv between said. contact plates, an insulating fixed on said pin and minimally resting against contact plates, a movable contact iixedon said pin and adapted to be pressed by said button against said contact plates,

and a spring compressed between said base 7 plate and insulating member for holding said movable contact normally in spaced relation to said contact plates.

In testimony whereof I afiix my signature.

FREDERICK W, WOBLEY.

member 

